| A | B |
|---|
| Define digestion | Digestion is the process of breaking down foods so they can be used by cells in the body |
| What helps saliva work faster? | saliva works best when there is heat |
| After two days what would happen to starch mixed with saliva? | starch will be completely broken down into sugars |
| After two days what would happen to sugar mixed with saliva? | it will be the same because it can not be broken down any further |
| What are the first two steps in digestion | chewing and salvatation(starch) |
| list the three funtions of the stomach in digestion | storage of food, churns and mixes stomach, and begins to digest protein |
| What is teh role of mucus in the stomahch? | mucus protects the stomach from stomach acid |
| describe the parts of the stomach | stomahc is lined with mucus...muscular wals churn and mixes food. sphincter opens and closes to let food in and out of he stomach |
| describe small intestine? | about 20 feet, smooth muscle |
| Describe the function of the pancreas in the digestive system | releases juices that neutrilize the stomach acids |
| What does the liver do in digestion? | the liver makes bile which breaks down fats |
| what is the importance of villi lining the small intestine | villi provide lots of surface so nutrients can be absorbed |
| define an enzyme | an enzyme is a group of proteins which control chemical changes and reactions. Enzymes in saliva breakk down starch. |
